# Homework 6 - Abd Elhai Mohamed Homework 6 Due Mar 3 2008...

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Abd Elhai, Mohamed – Homework 6 – Due: Mar 3 2008, 11:00 pm – Inst: Dr Kevin Dean 1 This print-out should have 21 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. This is ONLINE HOMEWORK No 6 It is due 09:00 Tuesday morning, 4 March (Abu Dhabi time) - (same as 23:00 Monday night in Texas). 001 (part 1 of 2) 7 points A simple Atwood’s machine uses two masses m 1 and m 2 . Starting from rest, the speed of the two masses is 1 . 8 m / s at the end of 9 . 8 s. At that time, the kinetic energy of the system is 34 J and each mass has moved a distance of 8 . 82 m. The acceleration of gravity is 9 . 81 m / s 2 . 8 . 82 m m 1 m 2 Find the value of heavier mass. Answer in units of kg. 002 (part 2 of 2) 2 points Find the value of lighter mass. Answer in units of kg. 003 (part 1 of 3) 7 points A 2 . 94 kg block is pushed 1 . 5 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of 57 . 6 with the horizontal. The acceleration of gravity is 9 . 8 m / s 2 .

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